package com.atguigu.lease.web.admin.custom.interceptor;


import com.atguigu.lease.common.context.LoginUser;
import com.atguigu.lease.common.context.LoginUserContext;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.web.admin.service.SystemUserService;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
@Component
public class AuthenticationInterceptor  implements HandlerInterceptor {


    @Autowired
    private SystemUserService systemUserService;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String token = request.getHeader("access_token");
        if(!StringUtils.hasLength(token)){
            throw new LeaseException(ResultCodeEnum.ADMIN_LOGIN_AUTH);
        }

        Long userId = JwtUtil.getUserId(token);
        SystemUser systemUser = systemUserService.getById(userId);
        LoginUser loginUser = new LoginUser(systemUser.getId(),systemUser.getUsername());
        //将用户信息保存到thread中 以后在任意位置 都可以通过该方法获取用户信息.
        LoginUserContext.setLoginUser(loginUser);
        return true;
    }
}
